<?php
/*
* 2007-2015 PrestaShop
*
* NOTICE OF LICENSE
*
* This source file is subject to the Open Software License (OSL 3.0)
* that is bundled with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://opensource.org/licenses/osl-3.0.php
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@prestashop.com so we can send you a copy immediately.
*
* DISCLAIMER
*
* Do not edit or add to this file if you wish to upgrade PrestaShop to newer
* versions in the future. If you wish to customize PrestaShop for your
* needs please refer to http://www.prestashop.com for more information.
*
*  @author PrestaShop SA <contact@prestashop.com>
*  @copyright  2007-2015 PrestaShop SA
*  @license    http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
*  International Registered Trademark & Property of PrestaShop SA
*/

function add_missing_shop_column_pagenotfound()
{
	$res = true;
	$exists = Db::getInstance()->executeS('SHOW TABLES LIKE "'._DB_PREFIX_.'pagenotfound"');
	if (count($exists))
	{
		$fields = Db::getInstance()->executeS('SHOW FIELDS FROM `'._DB_PREFIX_.'pagenotfound`');
		foreach ($fields as $k => $field)
			$fields[$k] = $field['Field'];

		if (!in_array('id_shop_group', $fields))
			$res &= Db::getInstance()->execute('ALTER TABLE `'._DB_PREFIX_.'pagenotfound` 
				ADD `id_shop_group` INT(10) AFTER `id_pagenotfound`');

		if (!in_array('id_shop', $fields))
			$res &= DB::getInstance()->execute('ALTER TABLE `'._DB_PREFIX_.'pagenotfound` 
				ADD `id_shop` INT(10) AFTER `id_pagenotfound`');
	}
	return $res;
}
